Intangible Assets

6 Months Ended

Jan. 31, 2015

Finite-Lived Intangible Assets, Net [Abstract]

Intangible assets with finite lives as of January 31, 2015 and July 31, 2014 are as follows:



	January 31, 2015
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.8	$	47,370,000	37,768,000	$	9,602,000
Customer relationships	10.0	29,831,000		19,506,000	10,325,000
Trademarks and other	20.0	5,794,000		2,622,000	3,172,000
Total		$	82,995,000	59,896,000	$	23,099,000



	July 31, 2014
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization	Net Carrying Amount
Technologies	11.8	$	47,370,000	36,240,000	$	11,130,000
Customer relationships	10.0	29,831,000		18,031,000	11,800,000
Trademarks and other	20.0	5,794,000		2,504,000	3,290,000
Total		$	82,995,000	56,775,000	$	26,220,000

The weighted average amortization period in the above table excludes fully amortized intangible assets.

Amortization expense for the three months ended January 31, 2015 and 2014 was $1,560,000 and $1,582,000, respectively. Amortization expense for the six months ended January 31, 2015 and 2014 was $3,121,000 and $3,164,000, respectively.

The estimated amortization expense for the fiscal years ending July 31, 2015, 2016, 2017, 2018, and 2019 is $6,211,000, $4,962,000, $4,782,000, $4,782,000 and $862,000, respectively.